Wikinger
Problems with the automatic temperature control in the BMW 5 Series
(Translated from German)
Summary of the thread
A BMW 5 Series owner is experiencing issues with the automatic temperature control, specifically an error code 9C68 that persists despite replacing the climate control unit and ventilation temperature sensor. The air conditioning functions correctly, but the error remains unresolved. Suggestions include checking wiring, blend door actuator, ambient and interior temperature sensors, and ensuring the control module is up-to-date and functioning properly. If these steps do not resolve the issue, consulting a professional mechanic is recommended.
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11 comment(s)
Wikinger (community.author)
community_quotation:
community_author_wrote_on
Check the wiring and connections related to the temperature control system for any signs of damage or corrosion. A faulty connection might be causing the error code. Let me know if this resolves the issue or if you need further assistance.
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CarlyMechanic
community_quotation:
community_author_wrote_on
Wiring is fine.
Inspect the blend door actuator, as it might be malfunctioning and causing the error code. This component controls the airflow and temperature mix inside the cabin. If it's faulty, it can lead to incorrect temperature readings. Let me know if you need further guidance or if this resolves the issue.
Wikinger (community.author)
community_quotation:
community_author_wrote_on
Inspect the blend door actuator, as it might be malfunctioning and causing the error code. This component controls the airflow and temperature mix inside the cabin. If it's faulty, it can lead to incorrect temperature readings. Let me know if you need further guidance or if this resolves the issue.
The mixing air flaps are fine - as I said, the air conditioning works correctly, but the error cannot be cleared.
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CarlyMechanic
community_quotation:
community_author_wrote_on
The mixing air flaps are fine - as I said, the air conditioning works correctly, but the error cannot be cleared.
Consider checking the ambient temperature sensor, as a faulty sensor can trigger error codes even if the system seems to work fine. Ensure it's clean and properly connected. Let me know if this helps or if you have more questions.
Wikinger (community.author)
community_quotation:
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Consider checking the ambient temperature sensor, as a faulty sensor can trigger error codes even if the system seems to work fine. Ensure it's clean and properly connected. Let me know if this helps or if you have more questions.
The ambient temperature sensor is also working correctly.
(community_translated_from_language)
CarlyMechanic
community_quotation:
community_author_wrote_on
The ambient temperature sensor is also working correctly.
Check the interior temperature sensor, as it might be giving incorrect readings, leading to the persistent error code. Ensure it's clean and functioning properly. If the issue persists, it might be worth consulting a professional mechanic for a more in-depth diagnosis. Let me know how it goes or if you have further questions.
Wikinger (community.author)
community_quotation:
community_author_wrote_on
Check the interior temperature sensor, as it might be giving incorrect readings, leading to the persistent error code. Ensure it's clean and functioning properly. If the issue persists, it might be worth consulting a professional mechanic for a more in-depth diagnosis. Let me know how it goes or if you have further questions.
As already answered in the initial question, the ventilation temperature sensor is NEW.
(community_translated_from_language)
CarlyMechanic
community_quotation:
community_author_wrote_on
As already answered in the initial question, the ventilation temperature sensor is NEW.
Inspect the control module for any software updates or faults, as sometimes a software glitch can cause persistent error codes. If the module is outdated or malfunctioning, it might need reprogramming or replacement. Keep me updated on your progress or if you need further assistance.
Wikinger (community.author)
community_quotation:
community_author_wrote_on
Inspect the control module for any software updates or faults, as sometimes a software glitch can cause persistent error codes. If the module is outdated or malfunctioning, it might need reprogramming or replacement. Keep me updated on your progress or if you need further assistance.
I don't understand the question: The climate control unit is the control unit and it is brand new and does not need to be programmed.
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BMW
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5
CarlyMechanic
Check the wiring and connections related to the temperature control system for any signs of damage or corrosion. A faulty connection might be causing the error code. Let me know if this resolves the issue or if you need further assistance.